Help me!! Gear shifting question...

Good bloom · Mar 23, 2019

You have to match your traveling speed and RPM to certain gear. Either one of em off you cant engage. So watch carefully what everybody else is doing. Some students maybe better than you

elamigowapo · Mar 23, 2019

Tombstone69 said: ↑

Eaton transmissions are meant to be double clutched, according to the manufacturer. That being said a lot of drivers are not using the clutch and are floating gears, some do it well, some not so. If a gear gets constantly slammed(for lack of a better word)against, eventually the synchro allowing that gear to be smoothly shifted can become damaged, making it difficult to be shifted.The higher gears are smaller and are not as easy to float as the lower gears which are larger. I've driven trucks that have been used and abused and I've sometimes found it hard to get into a certain gear(through floating). Whenever that is the case, I simply pull it out of gear step on the clutch to shift, making it easier to engage. Also every truck has an rpm range for shifting, too low it won't go in too high, the same.Also you have to match the speed of the truck to the gear your traveling in. All of that takes practice and time.If you can take the truck somewhere, where you're not going to interfere with anyone, practice going up and down, especially in the gear that's giving you trouble. Try it with the clutch and without the clutch and don't try to rush it or jam it, because you'll only be doing damage. The last 7spd that I drove(it was an older Pete)had what I call a mystery shifter, because the stick was so loose, it was a mystery what gear I was shifting into. Take your time, don't rush and don't stress and make sure when it goes in, that's it's all the way in, and if it still pops out maybe that gear is damaged. Good luck and don't worry you'll get it.
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Thanks a lot Ill keep that in mind this monday when I go back to practice, i hears between 1500 and 1800 is the sweet spot?

Good bloom · Mar 23, 2019

Yes 1500-1600 RPM usually ok.
When i was in school my instructor told me
2nd gear 2x2 4 mph
3rd gear 3x3 9 mph
4th 4x4 16 mph
5th 25
6th 36 etc
That was 8 speed tranny. Maybe yours kinda similar

elamigowapo · Mar 24, 2019

So after thinkin it up for the day I am sure I know what I did wrong, this is the first time ever for me driving anything bigger than my silverado. Ive driven all kinds of manual cars. In manual vehicles you wait a few seconds between gears to shift you have long gears compared to a tractor. In a tractor you shift real quick between gears. I was waiting to long and was way over 2000 rpms when shifting hence why I wouldnt shift into the next gear.

Tombstone69 · Mar 24, 2019

The sweet spot is where the motor runs the best while in gear, not where you shift. The shift range is the rpm range where shifting is easiest. Every truck is different. Sometimes it takes a while to learn what that is, also low range is usually different from high range. It sounds confusing but after shifting a truck a couple thousand times you'll figure it out. Take your time and pay attention to the tach.

Jwhis · Mar 24, 2019

When in doubt cruise nice and easy and short shift a bit

roadranger550 · Mar 25, 2019

KB3MMX said: ↑

That's a synchronized transmission which is not the same as a heavy duty ....I'm suspecting you're driving a medium duty truck??

The 6&7 speed used synchronizers and are to be driven similar to a pickup truck. Be careful not to float gears on these as they can become damaged very easily which might be the case why yours isn't shifting well.
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Yes, car and pickup transmissions are NOT meant to be floated. Sure, you can do so, but its not good on the synchos. I once had my clutch cable bust on my Ford Mustang, so I floated it home and installed a new cable, but normally I dont do that in a light vehicle transmission.

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